Air outlet temperature prediction method and device of automobile air conditioner, automobile and storage medium

Abstract

The invention relates to the technical field of automobile air conditioners, and discloses an air outlet temperature prediction method and device of an automobile air conditioner, an automobile and a storage medium. The method comprises the steps that a first temperature influence factor corresponding to a warm air core body is obtained, and the air outlet temperature of the warm air core body is predicted based on the first temperature influence factor; a second temperature influence factor corresponding to the air PTC is obtained, and the air outlet temperature of the air PTC is predicted based on the second temperature influence factor and the air outlet temperature of the warm air core body; determining a working mode of the air outlet, and determining a third temperature influence factor corresponding to the air outlet based on the working mode of the air outlet; and predicting the air outlet temperature of the air outlet based on the air outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influence factor. According to the method, the manufacturing cost of the air conditioner is reduced, and meanwhile the more accurate air outlet temperature can be obtained.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automobile air conditioners, for example, to a method and device for predicting air outlet temperature of an automobile air conditioner, an automobile, and a storage medium. Background Art

[0002] With the rapid development of new energy vehicle technology, extended-range and plug-in hybrid vehicles have gradually become the mainstream of the market. However, when the temperature is very low in winter, the battery life is significantly reduced, which brings challenges to the use of vehicles. To solve this problem, when the engine is running or charging, the waste heat of the engine coolant can be used to meet the heating needs of the passenger compartment, which can reduce the energy consumption of the air PTC (Positive Temperature Coefficient Thermisto), thereby reducing the energy consumption of the entire vehicle and increasing the driving range.

[0003] In the related art, an air PTC heater is usually added behind the heater core in the air-conditioning box to meet the heating demand of the passenger compartment. At the same time, a temperature sensor is set at the position corresponding to the air outlet in the air-conditioning box, and the temperature sensor is used to realize closed-loop control of the heating function of the passenger compartment.

[0004] However, placing a temperature sensor in the air conditioner box requires additional space and structural design, which increases the manufacturing cost of the air conditioner. Moreover, the temperature sensor can only provide the average temperature in the air conditioner box, and cannot truly reflect the actual temperature load of each outlet area, resulting in an unsatisfactory heating effect.

[0005] It can be seen that the air conditioning box of the car in the related art will have a complex structure and high cost due to the installation of a temperature sensor, and the actual temperature of the air outlet area cannot be obtained by using the temperature sensor.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a method and device for predicting the outlet air temperature of an automobile air conditioner, an automobile, and a storage medium, which help reduce the manufacturing cost of the air conditioner and can obtain a more accurate outlet air temperature.

[0009] According to a first aspect of the present disclosure, a method for predicting air outlet temperature of an automobile air conditioner is provided, characterized by comprising:

[0010] Obtaining a first temperature influencing factor corresponding to the heater core, and predicting an outlet air temperature of the heater core based on the first temperature influencing factor;

[0011] Obtaining a second temperature influencing factor corresponding to the air PTC, and predicting the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core;

[0012] Determine an operating mode of the air outlet, and determine a third temperature influencing factor corresponding to the air outlet based on the operating mode of the air outlet;

[0013] The outlet temperature of the air is predicted based on the outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

[0014] In some embodiments, the first temperature influencing factor includes the working state of the heater core, the evaporator air outlet temperature, and the engine water temperature;

[0015] Predicting the outlet air temperature of the heater core based on the first temperature influencing factor includes:

[0016] When the working state of the heater core is not working, the evaporator outlet air temperature is used as the outlet air temperature of the heater core;

[0017] When the working state of the heater core is working, the outlet air temperature of the heater core is predicted based on the evaporator outlet air temperature and the engine water temperature.

[0018] In some embodiments, predicting the outlet air temperature of the heater core based on the evaporator outlet air temperature and the engine water temperature includes:

[0019] Calculate the target temperature and difference between the engine water temperature and the evaporator outlet air temperature;

[0020] The sum of the target temperature difference and the evaporator outlet air temperature is used as the outlet air temperature of the heater core.

[0021] In some embodiments, the first temperature influencing factor further includes ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate, and heater core warm air volume;

[0022] Calculate the target temperature and difference between the engine water temperature and the evaporator outlet air temperature, including:

[0023] Determining a first adjustment coefficient corresponding to the heater core based on the engine water temperature, the ambient target temperature and the engine thermostat opening;

[0024] Determine the heat transfer efficiency coefficient of the heater core based on the engine water pump speed, the heater core flow rate and the heater core warm air volume;

[0025] The target temperature and difference between the engine water temperature and the evaporator air outlet temperature are calculated based on the first adjustment coefficient corresponding to the heater core, the heater core heat exchange efficiency coefficient, the engine water temperature and the evaporator air outlet temperature.

[0026] In some embodiments, the second temperature influencing factor includes the working state of the air PTC and the warm air volume of the blower;

[0027] Based on the second temperature influencing factor and the outlet temperature of the heater core, the outlet temperature of the air PTC is predicted, including:

[0028] When the working state of the air PTC is not working, the outlet air temperature of the heater core is used as the outlet air temperature of the air PTC;

[0029] When the operating state of the heater core is working, the outlet air temperature of the air PTC is predicted based on the blower warm air volume and the outlet air temperature of the heater core.

[0030] In some embodiments, predicting the outlet temperature of the air PTC based on the blower warm air volume and the outlet temperature of the warm air core includes:

[0031] Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower warm air volume and the specific heat capacity of the air;

[0032] The ratio of the actual power of the air PTC to the heat capacity flow rate is taken as the incremental temperature;

[0033] The sum of the incremental temperature and the outlet temperature of the heater core is taken as the outlet temperature of the air PTC.

[0034] In some embodiments, the ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature, including:

[0035] Determine a second adjustment coefficient corresponding to the air PTC based on the warm air volume of the blower;

[0036] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature;

[0037] An incremental temperature is determined based on the reference target temperature and a second adjustment coefficient corresponding to the air PTC.

[0038] In some embodiments, the number of air outlet types is 2, and the working modes of the air outlet include a blowing mode and a defrosting mode;

[0039] Determining a working mode of the air outlet, and determining a third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet, including:

[0040] When one air outlet is in the defrosting mode and the other air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator outlet temperature;

[0041] When both air outlets are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature.

[0042] In some embodiments, when one air outlet is in a defrosting mode and another air outlet is in a blowing mode, the air outlet temperature of the air outlet is predicted based on the air PTC outlet temperature, the working mode of the air outlet and the third temperature influencing factor, including:

[0043] For the air outlet in the defrost mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet;

[0044] For the air outlet in the blowing mode, the temperature inside the vehicle is used as the air outlet temperature of the air outlet.

[0045] In some embodiments, when both air outlets are in the blowing mode, the air outlet temperature of the air outlet is predicted based on the air outlet temperature of the air PTC, the working mode of the air outlet, and the third temperature influencing factor, including:

[0046] For the air outlet in the blowing mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet.

[0047] In some embodiments, the third temperature influencing factor includes a mixing door proportional coefficient, a blower warm air volume, and a blower total air volume;

[0048] Calculate the target temperature and outlet temperature of the evaporator outlet air temperature air PTC, including:

[0049] Determine a weight coefficient of the outlet temperature of the evaporator outlet air temperature air PTC based on the mixing door proportional coefficient, and determine a third adjustment coefficient based on the vehicle interior temperature, the blower warm air volume, and the blower total air volume;

[0050] Based on the evaporator outlet air temperature, the air outlet air temperature of the air PTC and the corresponding weight coefficients, a weighted average temperature of the evaporator outlet air temperature and the air outlet air temperature of the air PTC is calculated;

[0051] Based on the weighted average temperature and the third adjustment coefficient, a target temperature sum of the outlet air temperature of the evaporator outlet air temperature air PTC is calculated.

[0052] According to a second aspect of the present disclosure, there is provided a device for predicting air outlet temperature of an automobile air conditioner, comprising:

[0053] a core temperature prediction module, configured to obtain a first temperature influencing factor corresponding to the warm air core, and predict an outlet air temperature of the warm air core based on the first temperature influencing factor;

[0054] A PTC temperature prediction module is configured to obtain a second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core;

[0055] an air outlet parameter determination module, configured to determine an operating mode of the air outlet, and determine a third temperature influencing factor corresponding to the air outlet based on the operating mode of the air outlet;

[0056] The air outlet temperature prediction module is configured to predict the air outlet temperature of the air outlet based on the air outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

[0057] According to a third aspect of the present disclosure, a device for predicting the outlet temperature of an automobile air conditioner is provided, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the method for predicting the outlet temperature of an automobile air conditioner provided by the first aspect of the present disclosure when running the program instructions.

[0058] According to a fourth aspect of the present disclosure, a car is provided, characterized by comprising the air outlet temperature prediction device of the car air conditioner provided by the second aspect or the third aspect of the present disclosure.

[0059] According to a fifth aspect of the present disclosure, a storage medium is provided, in which computer program instructions are stored. When the computer program instructions are executed by a processor, the method for predicting the air outlet temperature of the automobile air conditioner provided in the first aspect of the present disclosure is executed.

[0060] The method and device for predicting the outlet air temperature of an automobile air conditioner, the automobile, and the storage medium provided by the embodiments of the present disclosure can achieve the following technical effects:

[0061] The method for predicting the air outlet temperature of an automobile air conditioner provided in the embodiment of the present disclosure fully considers the temperature influencing factors related to the working mode of the heater core, the air PTC and the air outlet, and determines the air outlet temperature of the heater core, the air outlet temperature of the air PTC and the air outlet in order based on the corresponding temperature influencing factors, thereby obtaining a more accurate air outlet temperature of the air outlet. This method of determining the air outlet temperature of the air outlet does not require the provision of a temperature sensor specifically detecting the air outlet area, simplifies the structure of the air conditioning box, and helps reduce the manufacturing cost of the air conditioner. The process of predicting the air outlet temperature comprehensively considers temperature influencing factors of multiple dimensions, so that the final air outlet temperature is more accurate.

[0062] The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0064] Figure 1 It is a flow chart of a method for predicting air outlet temperature of an automobile air conditioner provided by an embodiment of the present disclosure;

[0065] Figure 2 It is a flow chart of another method for predicting the air outlet temperature of an automobile air conditioner provided by an embodiment of the present disclosure;

[0066] Figure 3 It is a flow chart of another method for predicting the air outlet temperature of an automobile air conditioner provided by an embodiment of the present disclosure;

[0067] Figure 4 It is a flow chart of another method for predicting the air outlet temperature of an automobile air conditioner provided by an embodiment of the present disclosure;

[0068] Figure 5 It is a flow chart of another method for predicting the air outlet temperature of an automobile air conditioner provided by an embodiment of the present disclosure;

[0069] Figure 6 It is a structural schematic diagram of an air outlet temperature prediction device for an automobile air conditioner provided by an embodiment of the present disclosure;

[0070] Figure 7 It is a structural schematic diagram of another automobile air-conditioning outlet temperature prediction device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0071] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0072] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0073] Unless otherwise stated, the term "plurality" means two or more.

[0074] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0075] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0076] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0077] The embodiment of the present disclosure provides a car, which is a range-extended car or a plug-in hybrid electric car. The car has an engine, a cooling system and an air conditioning system, wherein the air conditioning system at least includes an air conditioning box, a heater core, an air PTC and an evaporator, the heater core, the air PTC and the evaporator are all installed in the air conditioning box, and the heater core is connected in parallel with the air PTC.

[0078] The car can use the waste heat of the engine coolant to provide heating for the passenger compartment. In extended-range electric vehicles, the engine is mainly used to generate electricity, while in plug-in hybrid vehicles, the engine can directly drive the vehicle or charge the battery when necessary. The engine generates a lot of heat during operation, which can be transferred through the cooling system (i.e. coolant). The cooling system is responsible for taking away the heat generated by the engine to keep the engine within the appropriate operating temperature range. After the coolant circulates inside the engine, it will be pumped to the heater core for heating the passenger compartment.

[0079] The heater core is a heat exchanger that transfers the heat of the engine to the air in the passenger compartment through the heat exchange between the coolant and the air. The heater core is connected to the circulation loop of the cooling system and receives the high-temperature coolant from the engine. When the driver or passengers need heating, the blower blows air through the heater core so that the air is heated and sent into the passenger compartment. When the engine is not running or the coolant temperature is not high enough to provide sufficient heat, the air PTC can be used as a backup heating source to provide heat to the passenger compartment. When the heat provided by the heater core is insufficient, the control system will activate the air PTC to provide additional heat to the passenger compartment through electrical heating.

[0080] The air conditioner is provided with an air outlet, and the heated or cooled air inside it flows into the passenger compartment through the air outlet. The air conditioner is provided with two types of air outlets, specifically, the two types of air outlets are face-blowing air outlets and foot-blowing air outlets. The face-blowing air outlet is mainly used to blow air to the faces of the driver and passengers, and the foot-blowing air outlet is mainly used to blow air to the feet of the driver and passengers.

[0081] The embodiment of the present disclosure provides an outlet air temperature prediction device for an automobile air conditioner, which is arranged in the above-mentioned automobile. The outlet air temperature prediction device can obtain the temperature influencing factors of the heater core and the air PTC, as well as the working mode of the air outlet and its corresponding temperature influencing factors, and predict the outlet air temperature of the air outlet based on the obtained data.

[0082] In combination with the air outlet temperature prediction device of the automobile air conditioner provided in the embodiment of the present disclosure, the embodiment of the present disclosure provides an air outlet temperature prediction method of the automobile air conditioner. The execution subject of the air outlet temperature prediction method is the air outlet temperature prediction device (hereinafter referred to as the device), such as Figure 1 As shown, the method for predicting the outlet air temperature of the automobile air conditioner includes:

[0083] S101, the device obtains a first temperature influencing factor corresponding to a heater core, and predicts an outlet air temperature of the heater core based on the first temperature influencing factor.

[0084] In the disclosed embodiment, the influencing factor that can affect the outlet air temperature of the heater core is defined as the first temperature influencing factor. Optionally, the first temperature influencing factor includes the working state of the heater core, the evaporator outlet air temperature, and the engine water temperature. Optionally, the first temperature influencing factor also includes the ambient temperature, the engine thermostat opening, the engine water pump speed, the heater core flow rate, and the heater core warm air volume.

[0085] S102, the device obtains a second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core.

[0086] In the embodiment of the present disclosure, the influencing factor that can affect the outlet temperature of the air PTC is defined as the second temperature influencing factor. Optionally, the second temperature influencing factor includes the working state of the air PTC and the warm air volume of the blower.

[0087] S103, the device determines the working mode of the air outlet, and determines a third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0088] In the embodiment of the present disclosure, the number of air outlet types is 2, and the working modes of the air outlet include a blowing mode and a defrosting mode. Optionally, the two types of air outlets are face-blowing air outlets and foot-blowing air outlets, and the number of each type of air outlet can be determined according to actual design requirements.

[0089] In the disclosed embodiment, the influencing factor that can affect the outlet air temperature of the air outlet is defined as the third temperature influencing factor. Here, the working mode of each air outlet can be comprehensively considered to determine the third temperature influencing factor corresponding to each air outlet. Optionally, the third temperature influencing factor includes the in-vehicle target temperature and the evaporator outlet air temperature. Optionally, the third temperature influencing factor also includes the mixing damper proportional coefficient, the blower warm air volume and the blower total air volume.

[0090] S104, the device predicts the outlet temperature of the air outlet based on the outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

[0091] The method for predicting the air outlet temperature of an automobile air conditioner provided in the embodiment of the present disclosure fully considers the temperature influencing factors related to the working mode of the heater core, the air PTC and the air outlet, and determines the air outlet temperature of the heater core, the air outlet temperature of the air PTC and the air outlet in order based on the corresponding temperature influencing factors, thereby obtaining a more accurate air outlet temperature of the air outlet. This method of determining the air outlet temperature of the air outlet does not require the provision of a temperature sensor specifically detecting the air outlet area, simplifies the structure of the air conditioning box, and helps reduce the manufacturing cost of the air conditioner. The process of predicting the air outlet temperature comprehensively considers temperature influencing factors of multiple dimensions, so that the final air outlet temperature is more accurate.

[0092] In some embodiments, the first temperature influencing factor includes the working state of the heater core, the evaporator outlet temperature, and the engine water temperature. Predicting the outlet temperature of the heater core based on the first temperature influencing factor includes: when the working state of the heater core is not working, using the evaporator outlet temperature as the outlet temperature of the heater core; when the working state of the heater core is working, predicting the outlet temperature of the heater core based on the evaporator outlet temperature and the engine water temperature.

[0093] When the heater core is not working, the heater core does not heat the air, so the temperature of the air processed by the evaporator is the final temperature of the air entering the passenger compartment. This avoids unnecessary calculations and directly uses existing data, improving the accuracy and efficiency of the prediction. When the heater core is in operation, the evaporator outlet temperature and engine water temperature are comprehensively considered to predict the heater core outlet temperature. By combining these two key input parameters, the actual heater core outlet temperature can be more accurately predicted.

[0094] Combination Figure 2 As shown, the embodiment of the present disclosure provides another method for predicting the outlet air temperature of an automobile air conditioner, and the method for predicting the outlet air temperature of an automobile air conditioner includes:

[0095] S201, the device obtains a first temperature influencing factor corresponding to a heater core.

[0096] In the disclosed embodiment, the first temperature influencing factor includes the working state of the heater core, the evaporator outlet temperature and the engine water temperature. The evaporator outlet temperature refers to the target temperature set in the air-conditioning system and is usually adjusted by the user through the air-conditioning controller. The engine water temperature refers to the temperature of the coolant flowing through the heater core. The working states of the heater core include not working and working. If the heater core is not working, it cannot effectively transfer heat to the air and cannot provide sufficient warm air; if the heater core is working, it can provide warm air of corresponding temperature to the passenger compartment according to the temperature of the coolant.

[0097] S202, when the working state of the heater core is not working, the device uses the evaporator outlet air temperature as the outlet air temperature of the heater core.

[0098] S203, when the working state of the heater core is working, the device predicts the outlet air temperature of the heater core based on the outlet air temperature of the evaporator and the water temperature of the engine.

[0099] In the disclosed embodiment, the target temperature difference between the engine water temperature and the evaporator outlet air temperature can be calculated, and then the sum of the target temperature difference and the evaporator outlet air temperature is calculated. The sum of the target temperature difference and the evaporator outlet air temperature is used as the outlet air temperature of the heater core. This method can quickly respond to changes in the engine water temperature and the evaporator outlet air temperature, accurately predict the outlet air temperature of the heater core, and help improve the response speed and stability of the system.

[0100] S204, the device obtains a second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core.

[0101] S205, the device determines the working mode of the air outlet, and determines a third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0102] S206: The device predicts the outlet temperature of the air outlet based on the outlet temperature of the air PTC, the working mode of the air outlet, and the third temperature influencing factor.

[0103] In some embodiments, the first temperature influencing factor also includes the ambient temperature, the engine thermostat opening, the engine water pump speed, the heater core flow rate and the heater core warm air volume. Calculating the target temperature and difference between the engine water temperature and the evaporator outlet air temperature includes: determining the first adjustment coefficient corresponding to the heater core based on the engine water temperature, the ambient target temperature and the engine thermostat opening; determining the heater core heat exchange efficiency coefficient based on the engine water pump speed, the heater core flow rate and the heater core warm air volume; calculating the target temperature and difference between the engine water temperature and the evaporator outlet air temperature based on the first adjustment coefficient corresponding to the heater core, the heater core heat exchange efficiency coefficient, the engine water temperature and the evaporator outlet air temperature.

[0104] In some embodiments, based on the first adjustment coefficient corresponding to the heater core, the heat exchange efficiency coefficient of the heater core, the engine water temperature and the evaporator outlet air temperature, the target temperature and difference between the engine water temperature and the evaporator outlet air temperature are calculated, including: taking the product of the first adjustment coefficient corresponding to the heater core and the engine water temperature as the engine corrected water temperature; calculating the corrected temperature difference between the engine corrected water temperature and the evaporator outlet air temperature; taking the product of the corrected temperature difference and the heat exchange efficiency coefficient of the heater core as the target temperature and difference between the engine water temperature and the evaporator outlet air temperature.

[0105] In some embodiments, the first adjustment coefficient is the product of the heater core heat loss coefficient and the heater core correction coefficient, wherein the heater core heat loss coefficient is determined by the engine water temperature and the ambient temperature, and the heater core correction coefficient is determined by the engine thermostat opening.

[0106] In some embodiments, the heat exchange efficiency coefficient of the heater core is determined by the heater core flow rate and the heater core warm air volume corresponding to the engine water pump speed.

[0107] Optionally, the outlet air temperature of the heater core can be calculated using the following formula:

[0108] T hex =(T1×β1×β2-T2)×η+T2.

[0109] In the above formula, T hex is the outlet air temperature of the heater core, T1 is the engine water temperature, T2 is the outlet air temperature of the evaporator, and η is the heat exchange efficiency coefficient of the heater core.

[0110] In some embodiments, the second temperature influencing factor includes the working state of the air PTC and the warm air volume of the blower. Based on the second temperature influencing factor and the outlet temperature of the warm air core, the outlet temperature of the air PTC is predicted, including: when the working state of the air PTC is not working, the outlet temperature of the warm air core is used as the outlet temperature of the air PTC; when the working state of the warm air core is working, the outlet temperature of the air PTC is predicted based on the warm air volume of the blower and the outlet temperature of the warm air core.

[0111] When the air PTC is not working, the air PTC does not perform additional heating on the air, and the outlet temperature of the heater core is the final air temperature entering the passenger compartment. This method avoids unnecessary calculations and directly uses known data, improving the accuracy and efficiency of the prediction. When the air PTC is in operation, the outlet temperature of the air PTC is predicted by comprehensively considering the blower warm air volume and the outlet temperature of the heater core. By combining these two key parameters, the actual outlet temperature of the air PTC can be predicted more accurately.

[0112] Combination Figure 3 As shown, the embodiment of the present disclosure provides another method for predicting the outlet air temperature of an automobile air conditioner, and the method for predicting the outlet air temperature of an automobile air conditioner includes:

[0113] S301, the device obtains a first temperature influencing factor corresponding to a heater core, and predicts an outlet air temperature of the heater core based on the first temperature influencing factor.

[0114] S302, the device obtains a second temperature influencing factor corresponding to the air PTC.

[0115] In the disclosed embodiment, the second temperature influencing factor includes the working state of the air PTC and the blower warm air volume. The working state of the PTC includes not working and working. If the air PTC is not working, it cannot effectively transfer heat to the air, and cannot provide enough warm air; if the air PTC is working, it can provide warm air of the corresponding temperature to the passenger compartment. The blower warm air volume refers to the air flow rate that the blower in the air-conditioning system delivers through the heater core and the air PTC per unit time. In the automobile air-conditioning system, the blower is used to push air through heating elements such as the heater core and the air PTC, and finally delivers the heated air into the passenger compartment.

[0116] S303, when the working state of the air PTC is not working, the device uses the outlet air temperature of the warm air core as the outlet air temperature of the air PTC.

[0117] S304, when the working state of the heater core is working, the device predicts the outlet temperature of the air PTC based on the blower warm air volume and the outlet temperature of the heater core.

[0118] In the disclosed embodiment, the actual power of the air PTC can be determined, and the heat capacity flow rate can be calculated based on the blower warm air volume and the specific heat capacity of the air; the ratio of the actual power of the air PTC to the heat capacity flow rate is taken as the incremental temperature; the sum of the incremental temperature and the outlet temperature of the warm air core is taken as the outlet temperature of the air PTC.

[0119] S305, the device determines the working mode of the air outlet, and determines a third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0120] S306, the device predicts the outlet temperature of the air outlet based on the outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

[0121] In some embodiments, the ratio of the actual power of the air PTC to the heat capacity flow rate is used as the incremental temperature, including: determining the second adjustment coefficient corresponding to the air PTC based on the blower warm air volume; using the ratio of the actual power of the air PTC to the heat capacity flow rate as the reference temperature; determining the incremental temperature based on the reference target temperature and the second adjustment coefficient corresponding to the air PTC.

[0122] Optionally, the air outlet temperature of the air PTC can be calculated by the following formula:

[0123] T APTC =(P APTC / (Z×C))×&+T hex .

[0124] In the above formula, T APTC is the outlet temperature of the air PTC, P APTC is the actual power of air PTC, Z is the warm air volume of the blower, C is the specific heat capacity of air, & is the second adjustment coefficient corresponding to air PTC, T hex is the outlet temperature of the heater core. (P APTC / (Z×C)) is the reference temperature, (P APTC / (Z×C))×& is the incremental temperature.

[0125] In some embodiments, in the embodiments of the present disclosure, the number of air outlet types is 2, and the working modes of the air outlet include a blowing mode and a defrosting mode. Optionally, the two types of air outlets are face-blowing air outlets and foot-blowing air outlets, and the number of each type of air outlet can be determined according to actual design requirements.

[0126] In some embodiments, the working mode of the air outlet is determined, and the third temperature influencing factor corresponding to the air outlet is determined based on the working mode of the air outlet, including: when one air outlet is in a defrost mode and the other air outlet is in a blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator outlet temperature; when both air outlets are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator outlet temperature.

[0127] In some embodiments, when one air outlet is in a defrost mode and the other air outlet is in a blowing mode, the outlet temperature of the air outlet is predicted based on the outlet temperature of the air PTC, the operating mode of the air outlet and a third temperature influencing factor, including: for the air outlet in the defrost mode, calculating the target temperature and the outlet temperature of the evaporator outlet temperature and the air PTC, and using the target temperature and as the outlet temperature of the air outlet; for the air outlet in the blowing mode, using the temperature inside the vehicle as the outlet temperature of the air outlet.

[0128] Combination Figure 4 As shown, the embodiment of the present disclosure provides another method for predicting the outlet air temperature of an automobile air conditioner, and the method for predicting the outlet air temperature of an automobile air conditioner includes:

[0129] S401, the device obtains a first temperature influencing factor corresponding to a heater core, and predicts an outlet air temperature of the heater core based on the first temperature influencing factor.

[0130] S402, the device obtains a second temperature influencing factor corresponding to the air PTC, and predicts the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core.

[0131] S403, when one air outlet of the device is in a defrosting mode and the other air outlet is in a blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator outlet temperature.

[0132] Optionally, when the face air outlet is in the defrost mode and the foot air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator air outlet temperature.

[0133] Optionally, when the foot air outlet is in the defrost mode and the face air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator air outlet temperature.

[0134] S404, the device calculates the target temperature and the outlet temperature of the evaporator outlet temperature air PTC for the air outlet in the defrost mode, and uses the target temperature and the outlet temperature as the outlet temperature of the air outlet; for the air outlet in the blowing mode, the temperature inside the vehicle is used as the outlet temperature of the air outlet.

[0135] Optionally, when the face air outlet is in defrost mode and the foot air outlet is in blowing mode, for the face air outlet, the target temperature and the outlet temperature of the evaporator outlet temperature air PTC are calculated, and the target temperature and the outlet temperature are used as the outlet temperature of the air outlet; for the foot air outlet, the temperature inside the vehicle is used as the outlet temperature of the air outlet.

[0136] Optionally, when the foot air outlet is in defrost mode and the face air outlet is in blowing mode, for the foot air outlet, the target temperature and the outlet temperature of the evaporator outlet temperature air PTC are calculated, and the target temperature and the outlet temperature are used as the outlet temperature of the air outlet; for the face air outlet, the temperature inside the vehicle is used as the outlet temperature of the air outlet.

[0137] S405, when both air outlets of the device are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature.

[0138] Optionally, when both the foot-blowing air outlet and the face-blowing air outlet are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature

[0139] S406, the device calculates the target temperature sum of the outlet temperature of the evaporator outlet temperature air PTC for the outlet in the blowing mode, and uses the target temperature sum as the outlet temperature of the outlet.

[0140] Optionally, when both the foot outlet and the face outlet are in the blowing mode, the target temperature and the outlet temperature of the evaporator outlet temperature air PTC are calculated for the foot outlet or the face outlet, and the target temperature and the outlet temperature are used as the outlet temperature of the outlet.

[0141] In some embodiments, the third temperature influencing factor includes a mixing damper proportional coefficient, a blower warm air volume, and a blower total air volume. Calculating the target temperature and the outlet temperature of the evaporator outlet temperature air PTC includes: determining a weight coefficient of the outlet temperature of the evaporator outlet temperature air PTC based on the mixing damper proportional coefficient, determining a third adjustment coefficient based on the vehicle interior temperature, the blower warm air volume, and the blower total air volume; calculating a weighted average temperature of the evaporator outlet temperature and the outlet temperature of the air PTC based on the evaporator outlet temperature, the outlet temperature of the air PTC, and the corresponding weight coefficient; calculating the target temperature and the outlet temperature of the evaporator outlet temperature air PTC based on the weighted average temperature and the third adjustment coefficient.

[0142] In the disclosed embodiment, the mixing damper is located in the air conditioning box, and the ratio of cold air to hot air is controlled by adjusting the position of the damper, thereby adjusting the temperature of the air outlet. The mixing damper proportional coefficient is usually used to describe the ratio of cold air to hot air when the mixing damper is in different positions. The blower warm air volume refers to the air flow rate that passes through the warm air core and the air PTC delivered by the blower in the air conditioning system per unit time, and the total blower air volume is the total air flow rate delivered by the blower.

[0143] In some embodiments, the weight coefficient of the outlet temperature of the evaporator outlet temperature air PTC is determined based on the mixing damper proportional coefficient, including: using the mixing damper proportional coefficient as the weight coefficient of the outlet temperature of the air PTC, and using the difference between 1 and the mixing damper proportional coefficient as the weight coefficient of the evaporator outlet temperature.

[0144] In some embodiments, a third adjustment coefficient is determined based on the temperature inside the vehicle, the blower warm air volume and the blower total air volume, including: determining a first influencing factor coefficient based on the temperature inside the vehicle and the blower warm air volume, determining a second influencing factor coefficient based on the blower total air volume, and taking the product of the first influencing factor coefficient and the second influencing factor coefficient as the third adjustment coefficient.

[0145] In some embodiments, based on the weighted average temperature and the third adjustment coefficient, the target temperature sum of the outlet temperature of the evaporator outlet temperature air PTC is calculated, including: taking the product of the weighted average temperature and the third adjustment coefficient as the target temperature sum of the outlet temperature of the evaporator outlet temperature air PTC.

[0146] Optionally, the target temperature of the evaporator outlet air temperature air PTC outlet air temperature and can be calculated by the following formula:

[0147]

[0148] T n is the target temperature of the evaporator outlet air temperature and the outlet air temperature of the PTC, T APTC is the outlet temperature of the air PTC, is the mixing damper proportional coefficient. is the first impact factor coefficient, is the second impact factor coefficient, It is the weighted average temperature of the evaporator outlet air temperature and the air PTC outlet air temperature.

[0149] Combination Figure 5 As shown, the embodiment of the present disclosure provides another method for predicting the outlet air temperature of an automobile air conditioner, and the method for predicting the outlet air temperature of an automobile air conditioner includes:

[0150] S501, the device obtains a first temperature influencing factor corresponding to a heater core.

[0151] S502, when the working state of the heater core is not working, the device uses the evaporator outlet air temperature as the outlet air temperature of the heater core.

[0152] S503, when the working state of the heater core is working, the device predicts the outlet air temperature of the heater core based on the evaporator outlet air temperature and the engine water temperature.

[0153] S504, the device obtains a second temperature influencing factor corresponding to the air PTC.

[0154] S505, when the working state of the air PTC is not working, the device uses the outlet air temperature of the warm air core as the outlet air temperature of the air PTC.

[0155] S506, when the working state of the heater core is working, the device predicts the outlet temperature of the air PTC based on the warm air volume of the blower and the outlet temperature of the heater core.

[0156] S507, the device determines the working mode of the air outlet.

[0157] S508, when one air outlet of the device is in the defrosting mode and the other air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator air outlet temperature.

[0158] S509, the device calculates the target temperature and the outlet temperature of the evaporator outlet temperature air PTC for the air outlet in the defrost mode, and uses the target temperature and the outlet temperature as the outlet temperature of the air outlet; for the air outlet in the blowing mode, the temperature inside the vehicle is used as the outlet temperature of the air outlet.

[0159] S510, when both air outlets of the device are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature.

[0160] S511, the device calculates the target temperature sum of the outlet temperature of the evaporator outlet temperature air PTC for the outlet in the blowing mode, and uses the target temperature sum as the outlet temperature of the outlet.

[0161] Combination Figure 6 As shown, an embodiment of the present disclosure provides an outlet temperature prediction device 600 for an automobile air conditioner, and the outlet temperature prediction device 600 includes a core temperature prediction module 601, a PTC temperature prediction module 602, an outlet parameter determination module 603 and an outlet temperature prediction module 604.

[0162] The core temperature prediction module 601 is configured to obtain a first temperature influencing factor corresponding to the warm air core, and predict the outlet air temperature of the warm air core based on the first temperature influencing factor.

[0163] The PTC temperature prediction module 602 is configured to obtain a second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core.

[0164] The air outlet parameter determination module 603 is configured to determine the working mode of the air outlet, and determine the third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet.

[0165] The air outlet temperature prediction module 604 is configured to predict the air outlet temperature of the air outlet based on the air outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

[0166] The air outlet temperature prediction device for the automobile air conditioner provided in the embodiment of the present disclosure fully considers the temperature influencing factors related to the working mode of the heater core, the air PTC and the air outlet, and determines the air outlet temperature of the heater core, the air outlet temperature of the air PTC and the air outlet in order based on the corresponding temperature influencing factors, thereby obtaining a more accurate air outlet temperature of the air outlet. This method of determining the air outlet temperature does not require the provision of a temperature sensor specifically detecting the air outlet area, simplifies the structure of the air conditioning box, and helps reduce the manufacturing cost of the air conditioner. The process of predicting the air outlet temperature comprehensively considers temperature influencing factors of multiple dimensions, so that the final air outlet temperature is more accurate.

[0167] In some embodiments, the first temperature influencing factor includes the working state of the heater core, the evaporator air outlet temperature, and the engine water temperature. The core temperature prediction module 601 is configured as follows:

[0168] When the working state of the heater core is not working, the evaporator outlet air temperature is used as the outlet air temperature of the heater core;

[0169] When the working state of the heater core is working, the outlet air temperature of the heater core is predicted based on the evaporator outlet air temperature and the engine water temperature.

[0170] In some embodiments, the core temperature prediction module 601 is configured to:

[0171] Calculate the target temperature and difference between the engine water temperature and the evaporator outlet air temperature;

[0172] The sum of the target temperature difference and the evaporator outlet air temperature is used as the outlet air temperature of the heater core.

[0173] In some embodiments, the first temperature influencing factor also includes ambient temperature, engine thermostat opening, engine water pump speed, heater core flow rate and heater core warm air volume. The core temperature prediction module 601 is configured as follows:

[0174] Determining a first adjustment coefficient corresponding to the heater core based on the engine water temperature, the ambient target temperature and the engine thermostat opening;

[0175] Determine the heat transfer efficiency coefficient of the heater core based on the engine water pump speed, the heater core flow rate and the heater core warm air volume;

[0176] The target temperature and difference between the engine water temperature and the evaporator air outlet temperature are calculated based on the first adjustment coefficient corresponding to the heater core, the heater core heat exchange efficiency coefficient, the engine water temperature and the evaporator air outlet temperature.

[0177] In some embodiments, the second temperature influencing factor includes the working state of the air PTC and the warm air volume of the blower. The PTC temperature prediction module 602 is configured as follows:

[0178] When the working state of the air PTC is not working, the outlet air temperature of the heater core is used as the outlet air temperature of the air PTC;

[0179] When the operating state of the heater core is working, the outlet air temperature of the air PTC is predicted based on the blower warm air volume and the outlet air temperature of the heater core.

[0180] In some embodiments, the PTC temperature prediction module 602 is configured to:

[0181] Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower warm air volume and the specific heat capacity of the air;

[0182] The ratio of the actual power of the air PTC to the heat capacity flow rate is taken as the incremental temperature;

[0183] The sum of the incremental temperature and the outlet temperature of the heater core is taken as the outlet temperature of the air PTC.

[0184] In some embodiments, the PTC temperature prediction module 602 is configured to:

[0185] Determine a second adjustment coefficient corresponding to the air PTC based on the warm air volume of the blower;

[0186] The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature;

[0187] An incremental temperature is determined based on the reference target temperature and a second adjustment coefficient corresponding to the air PTC.

[0188] In some embodiments, the number of air outlet types is 2, and the working modes of the air outlet include a blowing mode and a defrosting mode. The air outlet parameter determination module 603 is configured as follows:

[0189] When one air outlet is in the defrosting mode and the other air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator outlet temperature;

[0190] When both air outlets are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature.

[0191] In some embodiments, when one air outlet is in the defrosting mode and the other air outlet is in the blowing mode, the air outlet temperature prediction module 604 is configured as follows:

[0192] For the air outlet in the defrost mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet;

[0193] For the air outlet in the blowing mode, the temperature inside the vehicle is used as the air outlet temperature of the air outlet.

[0194] In some embodiments, when both air outlets are in the blowing mode, the air outlet temperature prediction module 604 is configured as follows:

[0195] For the air outlet in the blowing mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet.

[0196] In some embodiments, the third temperature influencing factor includes a mixing damper ratio coefficient, a blower warm air volume, and a blower total air volume. The air outlet temperature prediction module 604 is configured as follows:

[0197] Determine a weight coefficient of the outlet temperature of the evaporator outlet air temperature air PTC based on the mixing door proportional coefficient, and determine a third adjustment coefficient based on the vehicle interior temperature, the blower warm air volume, and the blower total air volume;

[0198] Based on the evaporator outlet air temperature, the air outlet air temperature of the air PTC and the corresponding weight coefficients, a weighted average temperature of the evaporator outlet air temperature and the air outlet air temperature of the air PTC is calculated;

[0199] Based on the weighted average temperature and the third adjustment coefficient, a target temperature sum of the outlet air temperature of the evaporator outlet air temperature air PTC is calculated.

[0200] Combination Figure 7As shown, the embodiment of the present disclosure provides another outlet air temperature prediction device 700 for an automobile air conditioner, and the outlet air temperature prediction device 700 includes a processor (processor) 701 and a memory (memory) 702. Optionally, the outlet air temperature prediction device 700 may also include a communication interface (Communication Interface) 703 and a bus 704. Among them, the processor 701, the communication interface 703, and the memory 702 can communicate with each other through the bus 704. The communication interface 703 can be used for information transmission. The processor 701 can call the logic instructions in the memory 702 to execute the outlet air temperature prediction method of the automobile air conditioner of the above embodiment.

[0201] In addition, the logic instructions in the memory 702 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0202] The memory 702 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 701 executes the function application and data processing by running the program instructions / modules stored in the memory 702, that is, the air outlet temperature prediction method of the automobile air conditioner in the above embodiment is implemented.

[0203] The memory 702 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 702 may include a high-speed random access memory and may also include a non-volatile memory.

[0204] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned method for predicting the air outlet temperature of an automobile air conditioner.

[0205] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0206] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0207] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

Claims

1. A method for predicting the outlet air temperature of an automobile air conditioner, characterized in that: include: Obtaining a first temperature influencing factor corresponding to the heater core, and predicting an outlet air temperature of the heater core based on the first temperature influencing factor; Obtaining a second temperature influencing factor corresponding to the air PTC, and predicting the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core; Determine an operating mode of the air outlet, and determine a third temperature influencing factor corresponding to the air outlet based on the operating mode of the air outlet; The outlet temperature of the air is predicted based on the outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

2. The method for predicting outlet air temperature according to claim 1, characterized in that: The first temperature influencing factors include the working state of the heater core, the evaporator air outlet temperature and the engine water temperature; Predicting the outlet air temperature of the heater core based on the first temperature influencing factor includes: When the working state of the heater core is not working, the evaporator outlet air temperature is used as the outlet air temperature of the heater core; When the working state of the heater core is working, the outlet air temperature of the heater core is predicted based on the evaporator outlet air temperature and the engine water temperature.

3. The method for predicting outlet air temperature according to claim 2, characterized in that: Predict the heater core outlet temperature based on the evaporator outlet temperature and engine water temperature, including: Calculate the target temperature and difference between the engine water temperature and the evaporator outlet air temperature; The sum of the target temperature difference and the evaporator outlet air temperature is used as the outlet air temperature of the heater core.

4. The method for predicting outlet air temperature according to claim 3, characterized in that: The first temperature influencing factor also includes the ambient temperature, the engine thermostat opening, the engine water pump speed, the heater core flow rate and the heater core warm air volume; Calculate the target temperature and difference between the engine water temperature and the evaporator outlet air temperature, including: Determining a first adjustment coefficient corresponding to the heater core based on the engine water temperature, the ambient target temperature and the engine thermostat opening; Determine the heat transfer efficiency coefficient of the heater core based on the engine water pump speed, the heater core flow rate and the heater core warm air volume; The target temperature and difference between the engine water temperature and the evaporator air outlet temperature are calculated based on the first adjustment coefficient corresponding to the heater core, the heater core heat exchange efficiency coefficient, the engine water temperature and the evaporator air outlet temperature.

5. The method for predicting outlet air temperature according to claim 1, characterized in that: The second temperature influencing factor includes the working state of the air PTC and the warm air volume of the blower; Based on the second temperature influencing factor and the outlet temperature of the heater core, the outlet temperature of the air PTC is predicted, including: When the working state of the air PTC is not working, the outlet air temperature of the heater core is used as the outlet air temperature of the air PTC; When the operating state of the heater core is working, the outlet air temperature of the air PTC is predicted based on the blower warm air volume and the outlet air temperature of the heater core.

6. The method for predicting outlet air temperature according to claim 5, characterized in that: Predict the outlet temperature of the air PTC based on the blower warm air volume and the outlet temperature of the warm air core, including: Determine the actual power of the air PTC and calculate the heat capacity flow rate based on the blower warm air volume and the specific heat capacity of the air; The ratio of the actual power of the air PTC to the heat capacity flow rate is taken as the incremental temperature; The sum of the incremental temperature and the outlet temperature of the heater core is taken as the outlet temperature of the air PTC.

7. The method for predicting outlet air temperature according to claim 6, characterized in that: The ratio of the actual power of the air PTC to the heat capacity flow rate is taken as the incremental temperature, including: Determine a second adjustment coefficient corresponding to the air PTC based on the warm air volume of the blower; The ratio of the actual power of the air PTC to the heat capacity flow rate is used as the reference temperature; An incremental temperature is determined based on the reference target temperature and a second adjustment coefficient corresponding to the air PTC.

8. The method for predicting outlet air temperature according to claim 1, characterized in that: The number of air outlet types is 2, and the working modes of the air outlet include blowing mode and defrosting mode; Determining a working mode of the air outlet, and determining a third temperature influencing factor corresponding to the air outlet based on the working mode of the air outlet, including: When one air outlet is in the defrosting mode and the other air outlet is in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the target temperature in the vehicle and the evaporator outlet temperature; When both air outlets are in the blowing mode, the third temperature influencing factor corresponding to the air outlet includes the evaporator air outlet temperature.

9. The method for predicting outlet air temperature according to claim 8, characterized in that: When one air outlet is in defrosting mode and the other air outlet is in blowing mode, the air outlet temperature of the air outlet is predicted based on the air PTC outlet temperature, the working mode of the air outlet and the third temperature influencing factor, including: For the air outlet in the defrost mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet; For the air outlet in the blowing mode, the temperature inside the vehicle is used as the air outlet temperature of the air outlet.

10. The method for predicting outlet air temperature according to claim 8, characterized in that: When both air outlets are in the blowing mode, the outlet temperature of the air outlet is predicted based on the air PTC outlet temperature, the working mode of the air outlet and the third temperature influencing factor, including: For the air outlet in the blowing mode, the target temperature sum of the air outlet temperature of the evaporator air outlet temperature air PTC is calculated, and the target temperature sum is used as the air outlet temperature of the air outlet.

11. The method for predicting outlet air temperature according to claim 9 or 10, characterized in that: The third temperature influencing factors include the mixing door ratio coefficient, the blower warm air volume and the blower total air volume; Calculate the target temperature and outlet temperature of the evaporator outlet air temperature air PTC, including: Determine a weight coefficient of the outlet temperature of the evaporator outlet air temperature air PTC based on the mixing door proportional coefficient, and determine a third adjustment coefficient based on the vehicle interior temperature, the blower warm air volume, and the blower total air volume; Based on the evaporator outlet air temperature, the air outlet air temperature of the air PTC and the corresponding weight coefficients, a weighted average temperature of the evaporator outlet air temperature and the air outlet air temperature of the air PTC is calculated; Based on the weighted average temperature and the third adjustment coefficient, a target temperature sum of the outlet air temperature of the evaporator outlet air temperature air PTC is calculated.

12. A device for predicting air outlet temperature of an automobile air conditioner, characterized in that: include: a core temperature prediction module, configured to obtain a first temperature influencing factor corresponding to the warm air core, and predict an outlet air temperature of the warm air core based on the first temperature influencing factor; A PTC temperature prediction module is configured to obtain a second temperature influencing factor corresponding to the air PTC, and predict the air outlet temperature of the air PTC based on the second temperature influencing factor and the air outlet temperature of the heater core; an air outlet parameter determination module, configured to determine an operating mode of the air outlet, and determine a third temperature influencing factor corresponding to the air outlet based on the operating mode of the air outlet; The air outlet temperature prediction module is configured to predict the air outlet temperature of the air outlet based on the air outlet temperature of the air PTC, the working mode of the air outlet and the third temperature influencing factor.

13. A device for predicting air outlet temperature of an automobile air conditioner, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the air outlet temperature prediction method of the automobile air conditioner as described in any one of claims 1 to 11 when running the program instructions.

14. A car, characterized in that: It comprises the air outlet temperature prediction device of the automobile air conditioner as claimed in claim 12 or 13.

15. A storage medium, characterized in that: The storage medium stores computer program instructions, and when the computer program instructions are executed by the processor, the method for predicting the air outlet temperature of the automobile air conditioner as described in any one of claims 1 to 11 is executed.

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